Drill-jar.



C. R. BRYSON.

DRILL JAR.

APPLICATION HLED MAR.24,1915- 4 Patented Oct. 10, 1916.

FIG-.5.

WITNESSES G, 7/14 BY of the device hereina ensures-n. ZBBYSON, or rirrsnunen, rnnnsrtve'mm Application filed March 24,

T0011 whom it may concern.

Be it known that I, CHARLES R. Bnrson, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Drill-Jars, of which improvement thefollowing is a specification.

My invention relates to jars for drills employed in sinking or boring deep wells.

- The objects are, to produce a jar of maximum-efficiency andstrength, simple in construction, and to produce a jar the working surfaces of which are of uniform strength and at the same time avoid in the construction thereof the welding of any of theparts together. I accomplish these objects by means fter more particularly described, reference being had to the accompanying drawings, forming part hereof, in

' which- Figure 1 is a side elevation of the piston member. Fig. 2 is an end view ofthe same looking from the right.- Fig. 3 isa transverse section on the line 1 -1 of Fig. l. Fig. 4 is a side elevation of the cylinder is con- 5 is a nected to the piston member. Fi

the jar side elevation partly in section o assembled.

In constructing my improved jar, I take a blank similar in form to the member l,

shown in Fig. 4. I core,

other, as shown 1n ream, or otherwise form longitudinally therein, the bore, 2, the side walls of which are provided with openings, 3, 3, at points equidistant from each Fig. 3. The open end of the bore 2 is initially flared or enlarged, with the longitudinal slots 3, extending to the base of the said flared end, as indicated by Fig. 4. I then, after heating the same, insert therein the shank member, 4, of the piston, 5, the lower end of said shank being provided with outwa dly projecting wings, the openings, 3, in the 6, adapted to enter walls of the cylinder, 1, and w th a rounded 7 The base of the end or hammer portion,

bore 2 is provided with a depression corresponding in the rounded end or shape to iston 5 so asto hammer portion 7 of the p minimize the usual flattening of the metal caused .by the continual pounding of the hammer against the seat of the cylinder member. I then shrink, swage, or otherwise reduce'the enlarged end of the said cylinder member around the shank, 4, adj aoent to the 1915. Serial No. 16317.

shoulder, 8, on the piston member, as shown 7 in Fig. 5.

The jars thus produced are provided with l a socket, 9, formed in the solid end, and ,a

string of tools.

The-advantages of my improved jars are 1 that a very strong tool of this description is produced without welding and the working parts are of uniform and .corresponding strength.

The disposition of the wings upon the 70. t

shankmember of the piston and the recesses in which the same are seated formed in the that the working surfaces of both parts are equidistant and a maximum strength secured. 1

Having described my invention, what. I

60 v threaded extension, 10, atlthe other end for the purpose of connecting the same with a walls of the cylinder memberare so disposed degree of claim and desire to secure byLetters Patent, '1

' 1 drill jar comprising a socket, and a stem snugly and slidably engaging in the socket and having at least three equally spaced apart sides in contact with the inner wall of the socket, the stem also having at least three anvil members each radiating from between two adj acent sides, the socket having spaced apart longitudinally extending slots in its walls, one for'each anvil member, to receive the same and connect the socket and stem together and hold the same from relative lateral vibration.

2. A drill jar for comprising a link pro than two anvil members radiating from the sides at the outer end thereof, and a second link having a cylindrical socket in its inner terminal for the reception of said stem with a sliding fit, the second link also having more than two elongated slots in its sides terminating short of the inner end thereof for the receptionof the anvil members to interlock and guide the links, and having abutting faces for the sides of the cylindrical stem at more than two sides to prevent vibration of the links, said first link having an annular striking shoulder adapted to receive the closed inner end of said second link thereagainst.

3. A drill jar comprising a pair of links, one link having a stem with three anvil members equi-distantly spaced thereabout and havin engaging 'faces between said anvil m m e s, the second link having a socket to closely receive, house, and guide the stem,.the second link also having three .the slots to su port the engaging faces on the stem and old the links from lateral Vibration in any direction and in true longitudinal alinement at all times.

4. A drill jar comprising links or sections each made from a single piece ofmetal, one of the links or sections being hollowed out from one end inwardly forming a cylindrical socket and provided with elongated slots in the wall thereof, which slots begin at the inner end of the socket and extend part way along the wall thereof and are in communicationwith the socket, a cylindrical stem formed on the inner terminal. of the other section, or link, and a series elf-integral anvil bers enterin with a close sliding fit and completely surrounded by the same throughout the length of the stem in the socket except where ex-' posed through the slots, and the anvil memthe slots for forming a permanent mter coking connection between the two sections or links, said anvil members be ing of less length than the said 'slots for forming a sliding engagement between the twomembers. i 4

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

I CHARLES R. BRYSON. In the presence of- ELIZABETH TROLLOPE, OLARENCE A. WILLIAMS. 

